------------[ cut here ]------------ WARNING: CPU: 0 PID: 4462 at net/mac80211/tx.c:4934 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:-1 [inline] WARNING: CPU: 0 PID: 4462 at net/mac80211/tx.c:4934 __ieee80211_beacon_get+0x1abc/0x2110 net/mac80211/tx.c:5255 Modules linked in: CPU: 0 PID: 4462 Comm: syz-executor323 Not tainted 6.1.134-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4934 [inline] RIP: 0010:__ieee80211_beacon_get+0x1abc/0x2110 net/mac80211/tx.c:5255 Code: ff ff ff e8 46 cb 51 f7 0f 0b 48 8b 7c 24 20 e8 2a 83 66 fe e9 6f e8 ff ff e8 30 cb 51 f7 0f 0b e9 92 ed ff ff e8 24 cb 51 f7 <0f> 0b e9 26 f1 ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c fc e8 RSP: 0018:ffffc90000007820 EFLAGS: 00010246 RAX: ffffffff8a38df2c RBX: 0000000000000000 RCX: ffff88807b6c3b80 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000007a30 R08: ffffffff8a38d04c R09: ffffffff8a38c852 R10: 0000000000000003 R11: ffff88807b6c3b80 R12: dffffc0000000000 R13: 1ffff92000000f1c R14: ffff88807d10a258 R15: ffffffff8a38c520 FS: 00007fa9f3fa16c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000037030 CR3: 000000006d358000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> ieee80211_beacon_get_tim+0xb1/0x5d0 net/mac80211/tx.c:5342 ieee80211_beacon_get include/net/mac80211.h:5249 [inline] mac80211_hwsim_beacon_tx+0x1d2/0xaa0 drivers/net/wireless/mac80211_hwsim.c:2086 __iterate_interfaces+0x21e/0x4b0 net/mac80211/util.c:788 ieee80211_iterate_active_interfaces_atomic+0xd4/0x170 net/mac80211/util.c:824 mac80211_hwsim_beacon+0xd0/0x1e0 drivers/net/wireless/mac80211_hwsim.c:2142 __run_hrtimer kernel/time/hrtimer.c:1691 [inline] __hrtimer_run_queues+0x5e5/0xe50 kernel/time/hrtimer.c:1755 hrtimer_run_softirq+0x196/0x2c0 kernel/time/hrtimer.c:1772 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:578 __do_softirq kernel/softirq.c:612 [inline] invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:661 irq_exit_rcu+0x5/0x20 kernel/softirq.c:673 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline] sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691 RIP: 0010:unix_copy_addr net/unix/af_unix.c:2398 [inline] RIP: 0010:__unix_dgram_recvmsg+0x655/0x12c0 net/unix/af_unix.c:2459 Code: 38 00 0f 84 c5 00 00 00 4d 8d 77 18 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 84 d2 7a f8 41 bc 10 05 00 00 4d 03 26 <4c> 89 e0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 e7 e8 66 d2 7a f8 4d RSP: 0018:ffffc900042b7760 EFLAGS: 00000282 RAX: 1ffff1100da6ee03 RBX: dffffc0000000000 RCX: ffff88807b6c3b80 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900042b7910 R08: ffffffff88a2a029 R09: fffffbfff2257861 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888072fde510 R13: 1ffff92000856fa4 R14: ffff88806d377018 R15: ffff88806d377000 ____sys_recvmsg+0x285/0x530 net/socket.c:-1 ___sys_recvmsg net/socket.c:2780 [inline] do_recvmmsg+0x46d/0xad0 net/socket.c:2874 __sys_recvmmsg net/socket.c:2953 [inline] __do_sys_recvmmsg net/socket.c:2976 [inline] __se_sys_recvmmsg net/socket.c:2969 [inline] __x64_sys_recvmmsg+0x195/0x240 net/socket.c:2969 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fa9f4003829 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 91 1a 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa9f3fa1218 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007fa9f408d438 RCX: 00007fa9f4003829 RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000003 RBP: 00007fa9f408d430 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 00007fa9f405a38c R13: 00002000000001c0 R14: 0000200000000200 R15: 0000200000000210 </TASK> ---------------- Code disassembly (best guess): 0: 38 00 cmp %al,(%rax) 2: 0f 84 c5 00 00 00 je 0xcd 8: 4d 8d 77 18 lea 0x18(%r15),%r14 c: 4c 89 f0 mov %r14,%rax f: 48 c1 e8 03 shr $0x3,%rax 13: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1) 17: 74 08 je 0x21 19: 4c 89 f7 mov %r14,%rdi 1c: e8 84 d2 7a f8 call 0xf87ad2a5 21: 41 bc 10 05 00 00 mov $0x510,%r12d 27: 4d 03 26 add (%r14),%r12 * 2a: 4c 89 e0 mov %r12,%rax <-- trapping instruction 2d: 48 c1 e8 03 shr $0x3,%rax 31: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1) 35: 74 08 je 0x3f 37: 4c 89 e7 mov %r12,%rdi 3a: e8 66 d2 7a f8 call 0xf87ad2a5 3f: 4d rex.WRB